Valve.



A. L. ALEXANDER.

VALVE.

APPLICATION FILED AUG-27, 19x4.

Will/ A Ill/11111 inn s as ATNT oFI vALvE.

Specification of Letters Patent. Patented N 14 1916,

Application filed August 27, 1914. Serial No. 858,916.

To all whom it may concern:

Be it known that I, ALBERT L. ALEXANDER. of Boston, in the county ofSufi'olk and State of Massachusetts, have invented a new and usefulValve, of which the following 'is a specification.

My invention is an easily operating valve, and I disclose it as embodiedin a water or steam trap although it is useful in many otherembodiments.

One of the features of my invention is the small amount of forcenecessary to lift the valve particularly due to the combined sliding andlifting movement of the valve Another feature is a cushioning chamber togive a gentle closing of the valve.

Another feature is that my valve mechanism may be mounted in ordinarysteam piping.

Other features will be pointed out below.

In the drawing Figure l is a central vertical section of a deviceembodying my invention; Fig. 2 is a plan of the valve proper; and Fig, 3is an elevation of the same.

The members A, B and G represent ordinary steam piping, opening a beingprovided for connection with an air cock and openings 7) 7) forconnection with a gage.

Member A is in threaded engagement with member A. and has ports a fordis tribution of the inlet. Member A has its lower end closed by nut AValve seat member D is hollow and is in threaded engagement with memberC and comprises conical body portion (Z having bosses e c at intervals,each boss having a port 7' leading within the body portion, these portsbeing at an angle to the longitudinal axis of the device and theengaging surfaces of the bosses being substantially parallel with theouter surface of said body portion.

The valve member E is hollow and surrounds the valve seat member itsinner wall being substantially parallel with the outr wall of the valveseat member but spaced therefrom except where it engages bosses e, thelower portion 6 forming a skirt, the space between members D and Eforming a cushioning chamber 6 to provide gentle seating of the valve.

Ring F is mounted between member C and a shoulder cl on member D and hasscrewed to it two membersG G, each having a slot 9 to engage a pin 9fast to valve member E so that the upward movement of valve E will belimited by this pin and slot connection.

lllember l?) is pivotally connected to float H by pin it so that thefloat may move freely and easily in connection with the valve. Theordinary water level is indicated at K and when the water rises abovethat level the valve will be lifted from the bosses to permit dischargethrough ports 7 and passage /tthe upward movement being limited by thepin and slot connection 9 g or it might be limited by engagement of thetop of the float with member A When the valve is'closing some water willbe trapped between members E and D in cushioning chamber 2 and this willcause a. gentle closing of the valve especially when the ports are newlyclosed. This chamber will also keep member E in alinement with member Dand will form awater seal for the valve. t will be clear that only avery small area is exposed" to the pressure against lifting which isaccomplished by a combined movement of lifting and sliding of the valvewith reference to its seat. Likewise a very small. force is required toclose the valve, this being furnished by the weight of float H ininclosing member B.

The longitudinal projection of the engaging surfaces of bosses e is verysmall on account of the angular position of said surfaces and thereforethe working portion of valve E is substantiallybalanced because of thesame pressure within member E and outside thereof.

A. great advantage of my invention is that it may be readily used withordinary piping and further that it combines the compactness of a liftvalve with the advantages of a slide valve.

Further advantages are the compactness of the vessel in which the deviceis operated and cheapness of construction.

. What I claim is:

l. A device of the character described comprising a conical hollow bodyportion; a boss on said body portion forming a valve seat, the endsurface of said boss being parallel with the adjacent wall of said bodyportion, said boss having a port leading within said body portion, and avalve to engage said boss and having a skirt surrounding, parallel to,but spaced from, said body portion. g

2. A device of the character described comprising a hollow member; aboss on said member having an engaging surface at an angle to thevertical, said boss having a port leading to the interior of saidmember; a valve having a portion parallel to said engaging surface andhaving also another portion surrounding, but spaced from, said hollowmember to permit the presence of water between said other portion andsaid member; and a float movable vertically and moving said valvevertically so as to move the first-mentioned portion thereof into andout of engagement with the engaging surface of said boss.

3. A device of the character described comprising a hollow member; aboss on said member having an engaging surface at an angle to thevertical, said boss having a port leading to the interior of saidmember; a valve having a portion to engage said engaging surface andhaving also another portion surrounding, but spaced from, said hollowmember to permit the presence of fluid between said other portion andsaid member; and afloat moving substantially vertically and mov' 1g saidvalve substantially vertically so as to move the first-mentioned portionin to and out of engagement with the engaging surface of said boss. 7

4:. A device of the character described comprising a hollow member; aboss on said member having an engaging surface at an angle to thevertical, said boss having a port leading to the interior of saidmember; a valve having a portion parallel to said engaging surface andhaving also another portion outside of, and spaced from, saidhollowmember to permit the presence of fluid between said other portion andsaid member when the valve is closed; and a movable float 'moving thefirst-mentioned portion into and out of engagement with the engagingsurface of said bossand moving said other portion tow rd said hollowmember as the valve is closing.

5; A device of the character described comprising a hollow member havinga port; a boss on said member having an engaging surface at an angle tothe vertical; a valve to close said port and having a portion parallelto said engaging surface and hav- Copies of this patent may be obtainedfor face of said boss and moving-said other portion toward said hollowmember as the valve is closing. 7

6. A device of the character described comprising a member having aport; a boss on said member iaving an engaging surface; a valve to closesaid port and having a portion to engage said engaging surface of theboss and having another portion spaced from said member to permit thepresence of fluid between said other portion and said member; and afloat moving said valve to move the first-mentioned portion into and outof engagement with the engaging surface of said boss and moving saidother portion toward said member as the valve is closing, the engagingsurfaces of the valve and boss being obliquely disposed with relation tothe direction of movement of the valve.

r 7. A. device of the character described comprising a hollow member; aboss on said member having an engaging surface at an angle to thevertical said boss having a port leading to the interior of said member;a valve having a portion parallel to said engaging surface and havingalso another portion outside of, and spaced from, said hollow member topermit the presence of fluid between said other portion and said member;and a float movable substantially verticallyand moving said valvesubstantially vertically so as to move the first-mentioned portion intoand out of engagement with the engaging surface of said boss and movingsaid other portion toward said hollow memher as the valve is closing. v

8. A device of the character described comprising a member having aport; a boss on said member having an engaging surface at an angle tothe vertical; a valve to close said port and having a portion to engagesaid engaging surface and having other portion spaced from said memberto permit the presence of fluid between said other portion and saidmember; and a float moving said valve to move the first-mentionedportion into and out of engagement with the engaging surface of saidboss and moving said other portion toward the hollow member as the valveis closing.

ALBERT L. ALEXANDER.

lVitnesses Gnonen A. RoonwELL, ARTHUR F. RANDALL' five cents each, byaddressing the Commissioner of Patents, Washington, 13.0.

